Using iMovie you can quickly and easily publish an edited movie (in the form of a project) to YouTube. To do so, from an iMove Project, click Share and then click on YouTube… At the YouTube window (seen here), enter your account name and password. Then select a Category.
Next, you’ll want to enter a description and any relevant tags for the movie and then select the size with which you would like to publish the video. Also, check the box for Make this movie private if you would not like to make it publicly accessible. If you choose to make a movie private then you will need to log into YouTube and then choose the (up to) 25 people with whom you would like to share the video.
Final note, this process isn’t always immediate. The movie will upload to YouTube or give you an error. If you don’t receive an error then give it a little time after the upload is complete in iMovie before it will show up.
